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A264606 Number of self-dual negacyclic codes of length 2n over GF(9), where 2n runs through the numbers congruent to 2 or 4 mod 6 (cf. A047235). 0
4, 4, 8, 8, 4, 64, 8, 32, 64, 4, 8, 8, 1024, 64, 8, 32, 1024, 64, 8, 8, 4, 64, 512, 32, 64, 1024, 2048, 8, 64, 64, 8, 32, 1024, 1024, 8, 512, 64, 64, 8, 8192, 64, 4, 32768, 128, 1024, 262144, 8, 8192, 1024, 64, 512, 8, 1024, 4194304, 8, 8192, 64, 64, 8, 2147483648, 64, 64, 512, 32, 1024, 262144 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Amita Sahni and Poonam Trama Sehgal, Enumeration of self-dual and self-orthogonal negacyclic codes over finite fields, Advances in Mathematics of Communications, Volume 9, No. 4, 2015, 437-447.
CROSSREFS
Sequence in context: A198936 A289091 A019674 * A016712 A346062 A333167
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 24 2015
STATUS
approved

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Last modified May 22 10:58 EDT 2024. Contains 372745 sequences. (Running on oeis4.)